Latest release

Imputation flag for age (IFAGEP)

Census of Population and Housing: Census dictionary
Reference period
2021

Definition

This variable indicates if a person's age was imputed. Imputation is a statistical process for predicting values where no response was provided to a question and a response could not be derived.

See also Age (AGEP).

Scope

All persons

Categories

CodeCategory

01

Age not imputed

02

Age imputed

Number of categories: 2

Question(s) from the Census form

What is the person’s date of birth and age?

    What is the person’s date of birth and age?
    What is Person 1's date of birth?

    If date of birth is not known, please select 'Don't know date of birth' and provide Person 1's age.

    More information

    Day Month Year

    OR

    Don't know date of birth

    Age

      Example

      Age example

      Example

      What is Person 1's date of birth?

      If date of birth is not known, please select 'Don't know date of birth' and provide Person 1's age.

      More information

      Day Month Year

      OR

      Don't know date of birth (selected response)

      Age years

        Example

        Age example

        Example

        What is Person 1's date of birth?

        If date of birth is not known, please select 'Don't know date of birth' and provide Person 1's age.

        More information

        Day Month Year
        18 March 1993

        OR

        Don't know date of birth

        Age
        28 years

          More information

          Additional information relating to the question on: What is the person’s date of birth and age?

          More information

          What is Person 1's date of birth?

          If date of birth is not known, please select 'Don't know date of birth' and provide Person 1's age.

          More information

          It is important to note:
          •Date of birth is the date that the person was born.
          •Age is required only if the person's date of birth is not known. Please report age at Census night – Tuesday 10 August 2021.

          If the person is less than one year old and their date of birth is not known, enter '0' in the age box.

          How this variable is created

          When age is imputed this variable is coded to ‘02 Age imputed’. See Age (AGEP) for methods on how age is imputed.

          History and changes

          No changes have been made for 2021.

          Data use considerations

          Imputation flag for age (IFAGEP) can be used to identify how many respondents’ age was imputed at different geographical levels.

          Related variables and glossary terms